Developer calculators
Generate and explain cron schedules, convert data formats, test regular expressions, and create strong passwords entirely in your browser.
12 calculators
JSON format
Pretty-print, minify, and validate JSON.
OpenRegex
Test a regular expression against your text, safely.
OpenBase
Convert between binary, octal, decimal, and hexadecimal.
OpenTimestamp
Convert between Unix timestamps and human dates.
OpenUUID
Generate random version-4 UUIDs in your browser.
OpenPassword
Strong, unbiased passwords generated in your browser.
OpenColor
Convert between HEX, RGB, and HSL with a live swatch.
OpenCSV / JSON
Convert between CSV and JSON, RFC 4180 correct.
Opencurl
Turn a curl command into clean code.
OpenCron
Build, explain, and preview a cron schedule.
OpenCloud cost
Compare a workload's cost across AWS, Azure, Google Cloud, and Oracle.
Opentsconfig
Generate a valid TypeScript config from a few options.
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